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板沙地区山凤断裂以北分布一类富钠质岩石 ,以往的研究较少。对该类岩石分布、产状作了详细描述 ,通过宏观微观特征及岩石化学、稀土元素地球化学特征的分析进一步确认其为一套热水沉积岩 ,是热水溶液喷出海底后与海水介质和陆源沉积物混合形成的
A series of sodium-rich rocks are distributed to the north of Shanfeng fault in Bansha area, but less in the past. The distribution and occurrence of this kind of rocks are described in detail. The macroscopic and microcosmic characteristics, the analysis of the geochemical characteristics of the rock chemistry and the rare earth elements further confirm that they are a set of hydrothermal sedimentary rocks. After the hot water solution is sprayed out of the seabed, it is mixed with seawater and terrestrial Sediment formed by mixing